[net-next-2.6.git] / fs / hfsplus / inode.c

/*
 *  linux/fs/hfsplus/inode.c
 *
 * Copyright (C) 2001
 * Brad Boyer (flar@allandria.com)
 * (C) 2003 Ardis Technologies <roman@ardistech.com>
 *
 * Inode handling routines
 */

#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/pagemap.h>
#include <linux/mpage.h>
#include <linux/sched.h>

#include "hfsplus_fs.h"
#include "hfsplus_raw.h"

static int hfsplus_readpage(struct file *file, struct page *page)
{
	return block_read_full_page(page, hfsplus_get_block);
}

static int hfsplus_writepage(struct page *page, struct writeback_control *wbc)
{
	return block_write_full_page(page, hfsplus_get_block, wbc);
}

static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
			loff_t pos, unsigned len, unsigned flags,
			struct page **pagep, void **fsdata)
{
	int ret;

	*pagep = NULL;
	ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
				hfsplus_get_block,
				&HFSPLUS_I(mapping->host)->phys_size);
	if (unlikely(ret)) {
		loff_t isize = mapping->host->i_size;
		if (pos + len > isize)
			vmtruncate(mapping->host, isize);
	}

	return ret;
}

static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
{
	return generic_block_bmap(mapping, block, hfsplus_get_block);
}

static int hfsplus_releasepage(struct page *page, gfp_t mask)
{
	struct inode *inode = page->mapping->host;
	struct super_block *sb = inode->i_sb;
	struct hfs_btree *tree;
	struct hfs_bnode *node;
	u32 nidx;
	int i, res = 1;

	switch (inode->i_ino) {
	case HFSPLUS_EXT_CNID:
		tree = HFSPLUS_SB(sb)->ext_tree;
		break;
	case HFSPLUS_CAT_CNID:
		tree = HFSPLUS_SB(sb)->cat_tree;
		break;
	case HFSPLUS_ATTR_CNID:
		tree = HFSPLUS_SB(sb)->attr_tree;
		break;
	default:
		BUG();
		return 0;
	}
	if (!tree)
		return 0;
	if (tree->node_size >= PAGE_CACHE_SIZE) {
		nidx = page->index >> (tree->node_size_shift - PAGE_CACHE_SHIFT);
		spin_lock(&tree->hash_lock);
		node = hfs_bnode_findhash(tree, nidx);
		if (!node)
			;
		else if (atomic_read(&node->refcnt))
			res = 0;
		if (res && node) {
			hfs_bnode_unhash(node);
			hfs_bnode_free(node);
		}
		spin_unlock(&tree->hash_lock);
	} else {
		nidx = page->index << (PAGE_CACHE_SHIFT - tree->node_size_shift);
		i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift);
		spin_lock(&tree->hash_lock);
		do {
			node = hfs_bnode_findhash(tree, nidx++);
			if (!node)
				continue;
			if (atomic_read(&node->refcnt)) {
				res = 0;
				break;
			}
			hfs_bnode_unhash(node);
			hfs_bnode_free(node);
		} while (--i && nidx < tree->node_count);
		spin_unlock(&tree->hash_lock);
	}
	return res ? try_to_free_buffers(page) : 0;
}

static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb,
		const struct iovec *iov, loff_t offset, unsigned long nr_segs)
{
	struct file *file = iocb->ki_filp;
	struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
	ssize_t ret;

	ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
				  offset, nr_segs, hfsplus_get_block, NULL);

	/*
	 * In case of error extending write may have instantiated a few
	 * blocks outside i_size. Trim these off again.
	 */
	if (unlikely((rw & WRITE) && ret < 0)) {
		loff_t isize = i_size_read(inode);
		loff_t end = offset + iov_length(iov, nr_segs);

		if (end > isize)
			vmtruncate(inode, isize);
	}

	return ret;
}

static int hfsplus_writepages(struct address_space *mapping,
			      struct writeback_control *wbc)
{
	return mpage_writepages(mapping, wbc, hfsplus_get_block);
}

const struct address_space_operations hfsplus_btree_aops = {
	.readpage	= hfsplus_readpage,
	.writepage	= hfsplus_writepage,
	.sync_page	= block_sync_page,
	.write_begin	= hfsplus_write_begin,
	.write_end	= generic_write_end,
	.bmap		= hfsplus_bmap,
	.releasepage	= hfsplus_releasepage,
};

const struct address_space_operations hfsplus_aops = {
	.readpage	= hfsplus_readpage,
	.writepage	= hfsplus_writepage,
	.sync_page	= block_sync_page,
	.write_begin	= hfsplus_write_begin,
	.write_end	= generic_write_end,
	.bmap		= hfsplus_bmap,
	.direct_IO	= hfsplus_direct_IO,
	.writepages	= hfsplus_writepages,
};

const struct dentry_operations hfsplus_dentry_operations = {
	.d_hash       = hfsplus_hash_dentry,
	.d_compare    = hfsplus_compare_dentry,
};

static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dentry,
					  struct nameidata *nd)
{
	struct hfs_find_data fd;
	struct super_block *sb = dir->i_sb;
	struct inode *inode = NULL;
	struct hfsplus_inode_info *hip;
	int err;

	if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc"))
		goto out;

	inode = HFSPLUS_I(dir)->rsrc_inode;
	if (inode)
		goto out;

	inode = new_inode(sb);
	if (!inode)
		return ERR_PTR(-ENOMEM);

	hip = HFSPLUS_I(inode);
	inode->i_ino = dir->i_ino;
	INIT_LIST_HEAD(&hip->open_dir_list);
	mutex_init(&hip->extents_lock);
	hip->flags = HFSPLUS_FLG_RSRC;

	hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
	err = hfsplus_find_cat(sb, dir->i_ino, &fd);
	if (!err)
		err = hfsplus_cat_read_inode(inode, &fd);
	hfs_find_exit(&fd);
	if (err) {
		iput(inode);
		return ERR_PTR(err);
	}
	hip->rsrc_inode = dir;
	HFSPLUS_I(dir)->rsrc_inode = inode;
	igrab(dir);

	/*
	 * __mark_inode_dirty expects inodes to be hashed.  Since we don't
	 * want resource fork inodes in the regular inode space, we make them
	 * appear hashed, but do not put on any lists.  hlist_del()
	 * will work fine and require no locking.
	 */
	hlist_add_fake(&inode->i_hash);

	mark_inode_dirty(inode);
out:
	d_add(dentry, inode);
	return NULL;
}

static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, int dir)
{
	struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
	u16 mode;

	mode = be16_to_cpu(perms->mode);

	inode->i_uid = be32_to_cpu(perms->owner);
	if (!inode->i_uid && !mode)
		inode->i_uid = sbi->uid;

	inode->i_gid = be32_to_cpu(perms->group);
	if (!inode->i_gid && !mode)
		inode->i_gid = sbi->gid;

	if (dir) {
		mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
		mode |= S_IFDIR;
	} else if (!mode)
		mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
	inode->i_mode = mode;

	HFSPLUS_I(inode)->userflags = perms->userflags;
	if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
		inode->i_flags |= S_IMMUTABLE;
	else
		inode->i_flags &= ~S_IMMUTABLE;
	if (perms->rootflags & HFSPLUS_FLG_APPEND)
		inode->i_flags |= S_APPEND;
	else
		inode->i_flags &= ~S_APPEND;
}

static int hfsplus_file_open(struct inode *inode, struct file *file)
{
	if (HFSPLUS_IS_RSRC(inode))
		inode = HFSPLUS_I(inode)->rsrc_inode;
	if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
		return -EOVERFLOW;
	atomic_inc(&HFSPLUS_I(inode)->opencnt);
	return 0;
}

static int hfsplus_file_release(struct inode *inode, struct file *file)
{
	struct super_block *sb = inode->i_sb;

	if (HFSPLUS_IS_RSRC(inode))
		inode = HFSPLUS_I(inode)->rsrc_inode;
	if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
		mutex_lock(&inode->i_mutex);
		hfsplus_file_truncate(inode);
		if (inode->i_flags & S_DEAD) {
			hfsplus_delete_cat(inode->i_ino,
					   HFSPLUS_SB(sb)->hidden_dir, NULL);
			hfsplus_delete_inode(inode);
		}
		mutex_unlock(&inode->i_mutex);
	}
	return 0;
}

static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
{
	struct inode *inode = dentry->d_inode;
	int error;

	error = inode_change_ok(inode, attr);
	if (error)
		return error;

	if ((attr->ia_valid & ATTR_SIZE) &&
	    attr->ia_size != i_size_read(inode)) {
		error = vmtruncate(inode, attr->ia_size);
		if (error)
			return error;
	}

	setattr_copy(inode, attr);
	mark_inode_dirty(inode);
	return 0;
}

static int hfsplus_file_fsync(struct file *filp, int datasync)
{
	struct inode *inode = filp->f_mapping->host;
	struct super_block * sb;
	int ret, err;

	/* sync the inode to buffers */
	ret = write_inode_now(inode, 0);

	/* sync the superblock to buffers */
	sb = inode->i_sb;
	if (sb->s_dirt) {
		if (!(sb->s_flags & MS_RDONLY))
			hfsplus_sync_fs(sb, 1);
		else
			sb->s_dirt = 0;
	}

	/* .. finally sync the buffers to disk */
	err = sync_blockdev(sb->s_bdev);
	if (!ret)
		ret = err;
	return ret;
}

static const struct inode_operations hfsplus_file_inode_operations = {
	.lookup		= hfsplus_file_lookup,
	.truncate	= hfsplus_file_truncate,
	.setattr	= hfsplus_setattr,
	.setxattr	= hfsplus_setxattr,
	.getxattr	= hfsplus_getxattr,
	.listxattr	= hfsplus_listxattr,
};

static const struct file_operations hfsplus_file_operations = {
	.llseek 	= generic_file_llseek,
	.read		= do_sync_read,
	.aio_read	= generic_file_aio_read,
	.write		= do_sync_write,
	.aio_write	= generic_file_aio_write,
	.mmap		= generic_file_mmap,
	.splice_read	= generic_file_splice_read,
	.fsync		= hfsplus_file_fsync,
	.open		= hfsplus_file_open,
	.release	= hfsplus_file_release,
	.unlocked_ioctl = hfsplus_ioctl,
};

struct inode *hfsplus_new_inode(struct super_block *sb, int mode)
{
	struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
	struct inode *inode = new_inode(sb);
	struct hfsplus_inode_info *hip;

	if (!inode)
		return NULL;

	inode->i_ino = sbi->next_cnid++;
	inode->i_mode = mode;
	inode->i_uid = current_fsuid();
	inode->i_gid = current_fsgid();
	inode->i_nlink = 1;
	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;

	hip = HFSPLUS_I(inode);
	INIT_LIST_HEAD(&hip->open_dir_list);
	mutex_init(&hip->extents_lock);
	atomic_set(&hip->opencnt, 0);
	hip->flags = 0;
	memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
	memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
	hip->alloc_blocks = 0;
	hip->first_blocks = 0;
	hip->cached_start = 0;
	hip->cached_blocks = 0;
	hip->phys_size = 0;
	hip->fs_blocks = 0;
	hip->rsrc_inode = NULL;
	if (S_ISDIR(inode->i_mode)) {
		inode->i_size = 2;
		sbi->folder_count++;
		inode->i_op = &hfsplus_dir_inode_operations;
		inode->i_fop = &hfsplus_dir_operations;
	} else if (S_ISREG(inode->i_mode)) {
		sbi->file_count++;
		inode->i_op = &hfsplus_file_inode_operations;
		inode->i_fop = &hfsplus_file_operations;
		inode->i_mapping->a_ops = &hfsplus_aops;
		hip->clump_blocks = sbi->data_clump_blocks;
	} else if (S_ISLNK(inode->i_mode)) {
		sbi->file_count++;
		inode->i_op = &page_symlink_inode_operations;
		inode->i_mapping->a_ops = &hfsplus_aops;
		hip->clump_blocks = 1;
	} else
		sbi->file_count++;
	insert_inode_hash(inode);
	mark_inode_dirty(inode);
	sb->s_dirt = 1;

	return inode;
}

void hfsplus_delete_inode(struct inode *inode)
{
	struct super_block *sb = inode->i_sb;

	if (S_ISDIR(inode->i_mode)) {
		HFSPLUS_SB(sb)->folder_count--;
		sb->s_dirt = 1;
		return;
	}
	HFSPLUS_SB(sb)->file_count--;
	if (S_ISREG(inode->i_mode)) {
		if (!inode->i_nlink) {
			inode->i_size = 0;
			hfsplus_file_truncate(inode);
		}
	} else if (S_ISLNK(inode->i_mode)) {
		inode->i_size = 0;
		hfsplus_file_truncate(inode);
	}
	sb->s_dirt = 1;
}

void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
{
	struct super_block *sb = inode->i_sb;
	struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
	struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
	u32 count;
	int i;

	memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
	for (count = 0, i = 0; i < 8; i++)
		count += be32_to_cpu(fork->extents[i].block_count);
	hip->first_blocks = count;
	memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
	hip->cached_start = 0;
	hip->cached_blocks = 0;

	hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
	hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
	hip->fs_blocks =
		(inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
	inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
	hip->clump_blocks =
		be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
	if (!hip->clump_blocks) {
		hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
			sbi->rsrc_clump_blocks :
			sbi->data_clump_blocks;
	}
}

void hfsplus_inode_write_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
{
	memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
	       sizeof(hfsplus_extent_rec));
	fork->total_size = cpu_to_be64(inode->i_size);
	fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
}

int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
{
	hfsplus_cat_entry entry;
	int res = 0;
	u16 type;

	type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);

	HFSPLUS_I(inode)->linkid = 0;
	if (type == HFSPLUS_FOLDER) {
		struct hfsplus_cat_folder *folder = &entry.folder;

		if (fd->entrylength < sizeof(struct hfsplus_cat_folder))
			/* panic? */;
		hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
					sizeof(struct hfsplus_cat_folder));
		hfsplus_get_perms(inode, &folder->permissions, 1);
		inode->i_nlink = 1;
		inode->i_size = 2 + be32_to_cpu(folder->valence);
		inode->i_atime = hfsp_mt2ut(folder->access_date);
		inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
		inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
		HFSPLUS_I(inode)->create_date = folder->create_date;
		HFSPLUS_I(inode)->fs_blocks = 0;
		inode->i_op = &hfsplus_dir_inode_operations;
		inode->i_fop = &hfsplus_dir_operations;
	} else if (type == HFSPLUS_FILE) {
		struct hfsplus_cat_file *file = &entry.file;

		if (fd->entrylength < sizeof(struct hfsplus_cat_file))
			/* panic? */;
		hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
					sizeof(struct hfsplus_cat_file));

		hfsplus_inode_read_fork(inode, HFSPLUS_IS_DATA(inode) ?
					&file->data_fork : &file->rsrc_fork);
		hfsplus_get_perms(inode, &file->permissions, 0);
		inode->i_nlink = 1;
		if (S_ISREG(inode->i_mode)) {
			if (file->permissions.dev)
				inode->i_nlink = be32_to_cpu(file->permissions.dev);
			inode->i_op = &hfsplus_file_inode_operations;
			inode->i_fop = &hfsplus_file_operations;
			inode->i_mapping->a_ops = &hfsplus_aops;
		} else if (S_ISLNK(inode->i_mode)) {
			inode->i_op = &page_symlink_inode_operations;
			inode->i_mapping->a_ops = &hfsplus_aops;
		} else {
			init_special_inode(inode, inode->i_mode,
					   be32_to_cpu(file->permissions.dev));
		}
		inode->i_atime = hfsp_mt2ut(file->access_date);
		inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
		inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
		HFSPLUS_I(inode)->create_date = file->create_date;
	} else {
		printk(KERN_ERR "hfs: bad catalog entry used to create inode\n");
		res = -EIO;
	}
	return res;
}

int hfsplus_cat_write_inode(struct inode *inode)
{
	struct inode *main_inode = inode;
	struct hfs_find_data fd;
	hfsplus_cat_entry entry;

	if (HFSPLUS_IS_RSRC(inode))
		main_inode = HFSPLUS_I(inode)->rsrc_inode;

	if (!main_inode->i_nlink)
		return 0;

	if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
		/* panic? */
		return -EIO;

	if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
		/* panic? */
		goto out;

	if (S_ISDIR(main_inode->i_mode)) {
		struct hfsplus_cat_folder *folder = &entry.folder;

		if (fd.entrylength < sizeof(struct hfsplus_cat_folder))
			/* panic? */;
		hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
					sizeof(struct hfsplus_cat_folder));
		/* simple node checks? */
		hfsplus_cat_set_perms(inode, &folder->permissions);
		folder->access_date = hfsp_ut2mt(inode->i_atime);
		folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
		folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
		folder->valence = cpu_to_be32(inode->i_size - 2);
		hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
					 sizeof(struct hfsplus_cat_folder));
	} else if (HFSPLUS_IS_RSRC(inode)) {
		struct hfsplus_cat_file *file = &entry.file;
		hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
			       sizeof(struct hfsplus_cat_file));
		hfsplus_inode_write_fork(inode, &file->rsrc_fork);
		hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
				sizeof(struct hfsplus_cat_file));
	} else {
		struct hfsplus_cat_file *file = &entry.file;

		if (fd.entrylength < sizeof(struct hfsplus_cat_file))
			/* panic? */;
		hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
					sizeof(struct hfsplus_cat_file));
		hfsplus_inode_write_fork(inode, &file->data_fork);
		hfsplus_cat_set_perms(inode, &file->permissions);
		if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE)
			file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
		else
			file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
		file->access_date = hfsp_ut2mt(inode->i_atime);
		file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
		file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
		hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
					 sizeof(struct hfsplus_cat_file));
	}
out:
	hfs_find_exit(&fd);
	return 0;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/fs/hfsplus/inode.c
	3	*
	4	* Copyright (C) 2001
	5	* Brad Boyer (flar@allandria.com)
	6	* (C) 2003 Ardis Technologies <roman@ardistech.com>
	7	*
	8	* Inode handling routines
	9	*/
	10
	11	#include <linux/mm.h>
	12	#include <linux/fs.h>
	13	#include <linux/pagemap.h>
1da177e4	14	#include <linux/mpage.h>
e8edc6e0	15	#include <linux/sched.h>
1da177e4 LT	16
	17	#include "hfsplus_fs.h"
	18	#include "hfsplus_raw.h"
	19
	20	static int hfsplus_readpage(struct file file, struct page page)
	21	{
1da177e4 LT	22	return block_read_full_page(page, hfsplus_get_block);
	23	}
	24
	25	static int hfsplus_writepage(struct page page, struct writeback_control wbc)
	26	{
1da177e4 LT	27	return block_write_full_page(page, hfsplus_get_block, wbc);
	28	}
	29
7c0efc62 NP	30	static int hfsplus_write_begin(struct file file, struct address_space mapping,
	31	loff_t pos, unsigned len, unsigned flags,
	32	struct page pagep, void fsdata)
1da177e4	33	{
282dc178 CH	34	int ret;
282dc178 CH	35
7c0efc62	36	*pagep = NULL;
282dc178	37	ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
7c0efc62	38	hfsplus_get_block,
6af502de	39	&HFSPLUS_I(mapping->host)->phys_size);
282dc178 CH	40	if (unlikely(ret)) {
	41	loff_t isize = mapping->host->i_size;
	42	if (pos + len > isize)
	43	vmtruncate(mapping->host, isize);
	44	}
	45
	46	return ret;
1da177e4 LT	47	}
	48
	49	static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
	50	{
	51	return generic_block_bmap(mapping, block, hfsplus_get_block);
	52	}
	53
27496a8c	54	static int hfsplus_releasepage(struct page *page, gfp_t mask)
1da177e4 LT	55	{
	56	struct inode *inode = page->mapping->host;
	57	struct super_block *sb = inode->i_sb;
	58	struct hfs_btree *tree;
	59	struct hfs_bnode *node;
	60	u32 nidx;
	61	int i, res = 1;
	62
	63	switch (inode->i_ino) {
	64	case HFSPLUS_EXT_CNID:
dd73a01a	65	tree = HFSPLUS_SB(sb)->ext_tree;
1da177e4 LT	66	break;
1da177e4 LT	67	case HFSPLUS_CAT_CNID:
dd73a01a	68	tree = HFSPLUS_SB(sb)->cat_tree;
1da177e4 LT	69	break;
1da177e4 LT	70	case HFSPLUS_ATTR_CNID:
dd73a01a	71	tree = HFSPLUS_SB(sb)->attr_tree;
1da177e4 LT	72	break;
	73	default:
	74	BUG();
	75	return 0;
	76	}
70632249 ES	77	if (!tree)
70632249 ES	78	return 0;
1da177e4 LT	79	if (tree->node_size >= PAGE_CACHE_SIZE) {
	80	nidx = page->index >> (tree->node_size_shift - PAGE_CACHE_SHIFT);
	81	spin_lock(&tree->hash_lock);
	82	node = hfs_bnode_findhash(tree, nidx);
	83	if (!node)
	84	;
	85	else if (atomic_read(&node->refcnt))
	86	res = 0;
	87	if (res && node) {
	88	hfs_bnode_unhash(node);
	89	hfs_bnode_free(node);
	90	}
	91	spin_unlock(&tree->hash_lock);
	92	} else {
	93	nidx = page->index << (PAGE_CACHE_SHIFT - tree->node_size_shift);
	94	i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift);
	95	spin_lock(&tree->hash_lock);
	96	do {
	97	node = hfs_bnode_findhash(tree, nidx++);
	98	if (!node)
	99	continue;
	100	if (atomic_read(&node->refcnt)) {
	101	res = 0;
	102	break;
	103	}
	104	hfs_bnode_unhash(node);
	105	hfs_bnode_free(node);
	106	} while (--i && nidx < tree->node_count);
	107	spin_unlock(&tree->hash_lock);
	108	}
1da177e4 LT	109	return res ? try_to_free_buffers(page) : 0;
	110	}
	111
1da177e4 LT	112	static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb,
	113	const struct iovec *iov, loff_t offset, unsigned long nr_segs)
	114	{
	115	struct file *file = iocb->ki_filp;
f44ea031	116	struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
eafdc7d1	117	ssize_t ret;
1da177e4	118
eafdc7d1	119	ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
1d8fa7a2	120	offset, nr_segs, hfsplus_get_block, NULL);
eafdc7d1 CH	121
	122	/*
	123	* In case of error extending write may have instantiated a few
	124	* blocks outside i_size. Trim these off again.
	125	*/
	126	if (unlikely((rw & WRITE) && ret < 0)) {
	127	loff_t isize = i_size_read(inode);
	128	loff_t end = offset + iov_length(iov, nr_segs);
	129
	130	if (end > isize)
	131	vmtruncate(inode, isize);
	132	}
	133
	134	return ret;
1da177e4 LT	135	}
	136
	137	static int hfsplus_writepages(struct address_space *mapping,
	138	struct writeback_control *wbc)
	139	{
	140	return mpage_writepages(mapping, wbc, hfsplus_get_block);
	141	}
	142
f5e54d6e	143	const struct address_space_operations hfsplus_btree_aops = {
1da177e4 LT	144	.readpage = hfsplus_readpage,
	145	.writepage = hfsplus_writepage,
	146	.sync_page = block_sync_page,
7c0efc62 NP	147	.write_begin = hfsplus_write_begin,
7c0efc62 NP	148	.write_end = generic_write_end,
1da177e4 LT	149	.bmap = hfsplus_bmap,
	150	.releasepage = hfsplus_releasepage,
	151	};
	152
f5e54d6e	153	const struct address_space_operations hfsplus_aops = {
1da177e4 LT	154	.readpage = hfsplus_readpage,
	155	.writepage = hfsplus_writepage,
	156	.sync_page = block_sync_page,
7c0efc62 NP	157	.write_begin = hfsplus_write_begin,
7c0efc62 NP	158	.write_end = generic_write_end,
1da177e4 LT	159	.bmap = hfsplus_bmap,
	160	.direct_IO = hfsplus_direct_IO,
	161	.writepages = hfsplus_writepages,
	162	};
	163
e16404ed	164	const struct dentry_operations hfsplus_dentry_operations = {
d45bce8f DG	165	.d_hash = hfsplus_hash_dentry,
	166	.d_compare = hfsplus_compare_dentry,
	167	};
	168
1da177e4 LT	169	static struct dentry hfsplus_file_lookup(struct inode dir, struct dentry *dentry,
	170	struct nameidata *nd)
	171	{
	172	struct hfs_find_data fd;
	173	struct super_block *sb = dir->i_sb;
	174	struct inode *inode = NULL;
6af502de	175	struct hfsplus_inode_info *hip;
1da177e4 LT	176	int err;
	177
	178	if (HFSPLUS_IS_RSRC(dir) \|\| strcmp(dentry->d_name.name, "rsrc"))
	179	goto out;
	180
6af502de	181	inode = HFSPLUS_I(dir)->rsrc_inode;
1da177e4 LT	182	if (inode)
	183	goto out;
	184
	185	inode = new_inode(sb);
	186	if (!inode)
	187	return ERR_PTR(-ENOMEM);
	188
6af502de	189	hip = HFSPLUS_I(inode);
1da177e4	190	inode->i_ino = dir->i_ino;
6af502de CH	191	INIT_LIST_HEAD(&hip->open_dir_list);
	192	mutex_init(&hip->extents_lock);
	193	hip->flags = HFSPLUS_FLG_RSRC;
1da177e4	194
dd73a01a	195	hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
1da177e4 LT	196	err = hfsplus_find_cat(sb, dir->i_ino, &fd);
	197	if (!err)
	198	err = hfsplus_cat_read_inode(inode, &fd);
	199	hfs_find_exit(&fd);
	200	if (err) {
	201	iput(inode);
	202	return ERR_PTR(err);
	203	}
6af502de CH	204	hip->rsrc_inode = dir;
6af502de CH	205	HFSPLUS_I(dir)->rsrc_inode = inode;
1da177e4	206	igrab(dir);
58a818f5 CH	207
	208	/*
	209	* __mark_inode_dirty expects inodes to be hashed. Since we don't
	210	* want resource fork inodes in the regular inode space, we make them
	211	* appear hashed, but do not put on any lists. hlist_del()
	212	* will work fine and require no locking.
	213	*/
756acc2d	214	hlist_add_fake(&inode->i_hash);
58a818f5	215
1da177e4	216	mark_inode_dirty(inode);
1da177e4 LT	217	out:
	218	d_add(dentry, inode);
	219	return NULL;
	220	}
	221
	222	static void hfsplus_get_perms(struct inode inode, struct hfsplus_perm perms, int dir)
	223	{
dd73a01a	224	struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
1da177e4 LT	225	u16 mode;
	226
	227	mode = be16_to_cpu(perms->mode);
	228
	229	inode->i_uid = be32_to_cpu(perms->owner);
	230	if (!inode->i_uid && !mode)
dd73a01a	231	inode->i_uid = sbi->uid;
1da177e4 LT	232
	233	inode->i_gid = be32_to_cpu(perms->group);
	234	if (!inode->i_gid && !mode)
dd73a01a	235	inode->i_gid = sbi->gid;
1da177e4 LT	236
1da177e4 LT	237	if (dir) {
dd73a01a	238	mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
1da177e4 LT	239	mode \|= S_IFDIR;
1da177e4 LT	240	} else if (!mode)
dd73a01a	241	mode = S_IFREG \| ((S_IRUGO\|S_IWUGO) & ~(sbi->umask));
1da177e4 LT	242	inode->i_mode = mode;
1da177e4 LT	243
6af502de	244	HFSPLUS_I(inode)->userflags = perms->userflags;
1da177e4 LT	245	if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
	246	inode->i_flags \|= S_IMMUTABLE;
	247	else
	248	inode->i_flags &= ~S_IMMUTABLE;
	249	if (perms->rootflags & HFSPLUS_FLG_APPEND)
	250	inode->i_flags \|= S_APPEND;
	251	else
	252	inode->i_flags &= ~S_APPEND;
	253	}
	254
1da177e4 LT	255	static int hfsplus_file_open(struct inode inode, struct file file)
	256	{
	257	if (HFSPLUS_IS_RSRC(inode))
6af502de	258	inode = HFSPLUS_I(inode)->rsrc_inode;
6e715294 AC	259	if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
6e715294 AC	260	return -EOVERFLOW;
6af502de	261	atomic_inc(&HFSPLUS_I(inode)->opencnt);
1da177e4 LT	262	return 0;
	263	}
	264
	265	static int hfsplus_file_release(struct inode inode, struct file file)
	266	{
	267	struct super_block *sb = inode->i_sb;
	268
	269	if (HFSPLUS_IS_RSRC(inode))
6af502de CH	270	inode = HFSPLUS_I(inode)->rsrc_inode;
6af502de CH	271	if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
1b1dcc1b	272	mutex_lock(&inode->i_mutex);
1da177e4 LT	273	hfsplus_file_truncate(inode);
1da177e4 LT	274	if (inode->i_flags & S_DEAD) {
dd73a01a CH	275	hfsplus_delete_cat(inode->i_ino,
dd73a01a CH	276	HFSPLUS_SB(sb)->hidden_dir, NULL);
1da177e4 LT	277	hfsplus_delete_inode(inode);
1da177e4 LT	278	}
1b1dcc1b	279	mutex_unlock(&inode->i_mutex);
1da177e4 LT	280	}
	281	return 0;
	282	}
	283
d39aae9e CH	284	static int hfsplus_setattr(struct dentry dentry, struct iattr attr)
	285	{
	286	struct inode *inode = dentry->d_inode;
	287	int error;
	288
	289	error = inode_change_ok(inode, attr);
	290	if (error)
	291	return error;
1025774c CH	292
	293	if ((attr->ia_valid & ATTR_SIZE) &&
	294	attr->ia_size != i_size_read(inode)) {
	295	error = vmtruncate(inode, attr->ia_size);
	296	if (error)
	297	return error;
	298	}
	299
	300	setattr_copy(inode, attr);
	301	mark_inode_dirty(inode);
	302	return 0;
d39aae9e CH	303	}
d39aae9e CH	304
b5fc510c AV	305	static int hfsplus_file_fsync(struct file *filp, int datasync)
	306	{
	307	struct inode *inode = filp->f_mapping->host;
	308	struct super_block * sb;
	309	int ret, err;
	310
	311	/* sync the inode to buffers */
	312	ret = write_inode_now(inode, 0);
	313
	314	/* sync the superblock to buffers */
	315	sb = inode->i_sb;
	316	if (sb->s_dirt) {
	317	if (!(sb->s_flags & MS_RDONLY))
	318	hfsplus_sync_fs(sb, 1);
	319	else
	320	sb->s_dirt = 0;
	321	}
	322
	323	/* .. finally sync the buffers to disk */
	324	err = sync_blockdev(sb->s_bdev);
	325	if (!ret)
	326	ret = err;
	327	return ret;
	328	}
	329
92e1d5be	330	static const struct inode_operations hfsplus_file_inode_operations = {
1da177e4 LT	331	.lookup = hfsplus_file_lookup,
1da177e4 LT	332	.truncate = hfsplus_file_truncate,
d39aae9e	333	.setattr = hfsplus_setattr,
1da177e4 LT	334	.setxattr = hfsplus_setxattr,
	335	.getxattr = hfsplus_getxattr,
	336	.listxattr = hfsplus_listxattr,
	337	};
	338
4b6f5d20	339	static const struct file_operations hfsplus_file_operations = {
1da177e4	340	.llseek = generic_file_llseek,
543ade1f BP	341	.read = do_sync_read,
	342	.aio_read = generic_file_aio_read,
	343	.write = do_sync_write,
	344	.aio_write = generic_file_aio_write,
1da177e4	345	.mmap = generic_file_mmap,
5ffc4ef4	346	.splice_read = generic_file_splice_read,
b5fc510c	347	.fsync = hfsplus_file_fsync,
1da177e4 LT	348	.open = hfsplus_file_open,
1da177e4 LT	349	.release = hfsplus_file_release,
7cc4bcc6	350	.unlocked_ioctl = hfsplus_ioctl,
1da177e4 LT	351	};
	352
	353	struct inode hfsplus_new_inode(struct super_block sb, int mode)
	354	{
dd73a01a	355	struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
1da177e4	356	struct inode *inode = new_inode(sb);
6af502de	357	struct hfsplus_inode_info *hip;
dd73a01a	358
1da177e4 LT	359	if (!inode)
	360	return NULL;
	361
dd73a01a	362	inode->i_ino = sbi->next_cnid++;
1da177e4	363	inode->i_mode = mode;
4ac8489a DH	364	inode->i_uid = current_fsuid();
4ac8489a DH	365	inode->i_gid = current_fsgid();
1da177e4 LT	366	inode->i_nlink = 1;
1da177e4 LT	367	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
6af502de CH	368
	369	hip = HFSPLUS_I(inode);
	370	INIT_LIST_HEAD(&hip->open_dir_list);
	371	mutex_init(&hip->extents_lock);
	372	atomic_set(&hip->opencnt, 0);
	373	hip->flags = 0;
	374	memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
	375	memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
	376	hip->alloc_blocks = 0;
	377	hip->first_blocks = 0;
	378	hip->cached_start = 0;
	379	hip->cached_blocks = 0;
	380	hip->phys_size = 0;
	381	hip->fs_blocks = 0;
	382	hip->rsrc_inode = NULL;
1da177e4 LT	383	if (S_ISDIR(inode->i_mode)) {
1da177e4 LT	384	inode->i_size = 2;
dd73a01a	385	sbi->folder_count++;
1da177e4 LT	386	inode->i_op = &hfsplus_dir_inode_operations;
	387	inode->i_fop = &hfsplus_dir_operations;
	388	} else if (S_ISREG(inode->i_mode)) {
dd73a01a	389	sbi->file_count++;
1da177e4 LT	390	inode->i_op = &hfsplus_file_inode_operations;
	391	inode->i_fop = &hfsplus_file_operations;
	392	inode->i_mapping->a_ops = &hfsplus_aops;
6af502de	393	hip->clump_blocks = sbi->data_clump_blocks;
1da177e4	394	} else if (S_ISLNK(inode->i_mode)) {
dd73a01a	395	sbi->file_count++;
1da177e4 LT	396	inode->i_op = &page_symlink_inode_operations;
1da177e4 LT	397	inode->i_mapping->a_ops = &hfsplus_aops;
6af502de	398	hip->clump_blocks = 1;
1da177e4	399	} else
dd73a01a	400	sbi->file_count++;
1da177e4 LT	401	insert_inode_hash(inode);
	402	mark_inode_dirty(inode);
	403	sb->s_dirt = 1;
	404
	405	return inode;
	406	}
	407
	408	void hfsplus_delete_inode(struct inode *inode)
	409	{
	410	struct super_block *sb = inode->i_sb;
	411
	412	if (S_ISDIR(inode->i_mode)) {
dd73a01a	413	HFSPLUS_SB(sb)->folder_count--;
1da177e4 LT	414	sb->s_dirt = 1;
	415	return;
	416	}
dd73a01a	417	HFSPLUS_SB(sb)->file_count--;
1da177e4 LT	418	if (S_ISREG(inode->i_mode)) {
	419	if (!inode->i_nlink) {
	420	inode->i_size = 0;
	421	hfsplus_file_truncate(inode);
	422	}
	423	} else if (S_ISLNK(inode->i_mode)) {
	424	inode->i_size = 0;
	425	hfsplus_file_truncate(inode);
	426	}
	427	sb->s_dirt = 1;
	428	}
	429
	430	void hfsplus_inode_read_fork(struct inode inode, struct hfsplus_fork_raw fork)
	431	{
	432	struct super_block *sb = inode->i_sb;
dd73a01a	433	struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
6af502de	434	struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
1da177e4 LT	435	u32 count;
	436	int i;
	437
6af502de	438	memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
1da177e4 LT	439	for (count = 0, i = 0; i < 8; i++)
1da177e4 LT	440	count += be32_to_cpu(fork->extents[i].block_count);
6af502de CH	441	hip->first_blocks = count;
	442	memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
	443	hip->cached_start = 0;
	444	hip->cached_blocks = 0;
	445
	446	hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
	447	hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
	448	hip->fs_blocks =
	449	(inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
	450	inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
	451	hip->clump_blocks =
dd73a01a	452	be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
6af502de CH	453	if (!hip->clump_blocks) {
6af502de CH	454	hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
dd73a01a CH	455	sbi->rsrc_clump_blocks :
	456	sbi->data_clump_blocks;
	457	}
1da177e4 LT	458	}
	459
	460	void hfsplus_inode_write_fork(struct inode inode, struct hfsplus_fork_raw fork)
	461	{
6af502de	462	memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
1da177e4 LT	463	sizeof(hfsplus_extent_rec));
1da177e4 LT	464	fork->total_size = cpu_to_be64(inode->i_size);
6af502de	465	fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
1da177e4 LT	466	}
	467
	468	int hfsplus_cat_read_inode(struct inode inode, struct hfs_find_data fd)
	469	{
	470	hfsplus_cat_entry entry;
	471	int res = 0;
	472	u16 type;
	473
	474	type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
	475
f6089ff8	476	HFSPLUS_I(inode)->linkid = 0;
1da177e4 LT	477	if (type == HFSPLUS_FOLDER) {
	478	struct hfsplus_cat_folder *folder = &entry.folder;
	479
	480	if (fd->entrylength < sizeof(struct hfsplus_cat_folder))
	481	/* panic? */;
	482	hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
	483	sizeof(struct hfsplus_cat_folder));
	484	hfsplus_get_perms(inode, &folder->permissions, 1);
	485	inode->i_nlink = 1;
	486	inode->i_size = 2 + be32_to_cpu(folder->valence);
	487	inode->i_atime = hfsp_mt2ut(folder->access_date);
	488	inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
9a4cad95	489	inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
6af502de CH	490	HFSPLUS_I(inode)->create_date = folder->create_date;
6af502de CH	491	HFSPLUS_I(inode)->fs_blocks = 0;
1da177e4 LT	492	inode->i_op = &hfsplus_dir_inode_operations;
	493	inode->i_fop = &hfsplus_dir_operations;
	494	} else if (type == HFSPLUS_FILE) {
	495	struct hfsplus_cat_file *file = &entry.file;
	496
	497	if (fd->entrylength < sizeof(struct hfsplus_cat_file))
	498	/* panic? */;
	499	hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
	500	sizeof(struct hfsplus_cat_file));
	501
	502	hfsplus_inode_read_fork(inode, HFSPLUS_IS_DATA(inode) ?
	503	&file->data_fork : &file->rsrc_fork);
	504	hfsplus_get_perms(inode, &file->permissions, 0);
	505	inode->i_nlink = 1;
	506	if (S_ISREG(inode->i_mode)) {
	507	if (file->permissions.dev)
	508	inode->i_nlink = be32_to_cpu(file->permissions.dev);
	509	inode->i_op = &hfsplus_file_inode_operations;
	510	inode->i_fop = &hfsplus_file_operations;
	511	inode->i_mapping->a_ops = &hfsplus_aops;
	512	} else if (S_ISLNK(inode->i_mode)) {
	513	inode->i_op = &page_symlink_inode_operations;
	514	inode->i_mapping->a_ops = &hfsplus_aops;
	515	} else {
	516	init_special_inode(inode, inode->i_mode,
	517	be32_to_cpu(file->permissions.dev));
	518	}
	519	inode->i_atime = hfsp_mt2ut(file->access_date);
	520	inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
9a4cad95	521	inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
6af502de	522	HFSPLUS_I(inode)->create_date = file->create_date;
1da177e4	523	} else {
634725a9	524	printk(KERN_ERR "hfs: bad catalog entry used to create inode\n");
1da177e4 LT	525	res = -EIO;
	526	}
	527	return res;
	528	}
	529
	530	int hfsplus_cat_write_inode(struct inode *inode)
	531	{
	532	struct inode *main_inode = inode;
	533	struct hfs_find_data fd;
	534	hfsplus_cat_entry entry;
	535
	536	if (HFSPLUS_IS_RSRC(inode))
6af502de	537	main_inode = HFSPLUS_I(inode)->rsrc_inode;
1da177e4 LT	538
	539	if (!main_inode->i_nlink)
	540	return 0;
	541
dd73a01a	542	if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
1da177e4 LT	543	/* panic? */
	544	return -EIO;
	545
	546	if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
	547	/* panic? */
	548	goto out;
	549
	550	if (S_ISDIR(main_inode->i_mode)) {
	551	struct hfsplus_cat_folder *folder = &entry.folder;
	552
	553	if (fd.entrylength < sizeof(struct hfsplus_cat_folder))
	554	/* panic? */;
	555	hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
	556	sizeof(struct hfsplus_cat_folder));
	557	/* simple node checks? */
90e61690	558	hfsplus_cat_set_perms(inode, &folder->permissions);
1da177e4 LT	559	folder->access_date = hfsp_ut2mt(inode->i_atime);
	560	folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
	561	folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
	562	folder->valence = cpu_to_be32(inode->i_size - 2);
	563	hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
	564	sizeof(struct hfsplus_cat_folder));
	565	} else if (HFSPLUS_IS_RSRC(inode)) {
	566	struct hfsplus_cat_file *file = &entry.file;
	567	hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
	568	sizeof(struct hfsplus_cat_file));
	569	hfsplus_inode_write_fork(inode, &file->rsrc_fork);
	570	hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
	571	sizeof(struct hfsplus_cat_file));
	572	} else {
	573	struct hfsplus_cat_file *file = &entry.file;
	574
	575	if (fd.entrylength < sizeof(struct hfsplus_cat_file))
	576	/* panic? */;
	577	hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
	578	sizeof(struct hfsplus_cat_file));
	579	hfsplus_inode_write_fork(inode, &file->data_fork);
90e61690	580	hfsplus_cat_set_perms(inode, &file->permissions);
1da177e4 LT	581	if ((file->permissions.rootflags \| file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE)
	582	file->flags \|= cpu_to_be16(HFSPLUS_FILE_LOCKED);
	583	else
	584	file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
	585	file->access_date = hfsp_ut2mt(inode->i_atime);
	586	file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
	587	file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
	588	hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
	589	sizeof(struct hfsplus_cat_file));
	590	}
	591	out:
	592	hfs_find_exit(&fd);
	593	return 0;
	594	}